@Override
public Metric deserialize(
JsonElement jsonElement, Type type, JsonDeserializationContext jsonDeserializationContext)
throws JsonParseException {
JsonObject jsonObject = jsonElement.getAsJsonObject();
String name = null;
if (jsonObject.get("name") != null) name = jsonObject.get("name").getAsString();
boolean exclude_tags = false;
if (jsonObject.get("exclude_tags") != null)
exclude_tags = jsonObject.get("exclude_tags").getAsBoolean();
TreeMultimap<String, String> tags = TreeMultimap.create();
JsonElement jeTags = jsonObject.get("tags");
if (jeTags != null) {
JsonObject joTags = jeTags.getAsJsonObject();
int count = 0;
for (Map.Entry<String, JsonElement> tagEntry : joTags.entrySet()) {
String context = "tags[" + count + "]";
if (tagEntry.getKey().isEmpty())
throw new ContextualJsonSyntaxException(context, "name must not be empty");
if (tagEntry.getValue().isJsonArray()) {
for (JsonElement element : tagEntry.getValue().getAsJsonArray()) {
if (element.isJsonNull() || element.getAsString().isEmpty())
throw new ContextualJsonSyntaxException(
context + "." + tagEntry.getKey(), "value must not be null or empty");
tags.put(tagEntry.getKey(), element.getAsString());
}
} else {
if (tagEntry.getValue().isJsonNull() || tagEntry.getValue().getAsString().isEmpty())
throw new ContextualJsonSyntaxException(
context + "." + tagEntry.getKey(), "value must not be null or empty");
tags.put(tagEntry.getKey(), tagEntry.getValue().getAsString());
}
count++;
}
}
Metric ret = new Metric(name, exclude_tags, tags);
JsonElement limit = jsonObject.get("limit");
if (limit != null) ret.setLimit(limit.getAsInt());
return (ret);
}
private void deserializeProperties(
String context, JsonObject jsonObject, String name, Object object)
throws QueryException, BeanValidationException {
Set<Map.Entry<String, JsonElement>> props = jsonObject.entrySet();
for (Map.Entry<String, JsonElement> prop : props) {
String property = prop.getKey();
if (property.equals("name")) continue;
PropertyDescriptor pd = null;
try {
pd = getPropertyDescriptor(object.getClass(), property);
} catch (IntrospectionException e) {
logger.error("Introspection error on " + object.getClass(), e);
}
if (pd == null) {
String msg =
"Property '"
+ property
+ "' was specified for object '"
+ name
+ "' but no matching setter was found on '"
+ object.getClass()
+ "'";
throw new QueryException(msg);
}
Class propClass = pd.getPropertyType();
Object propValue;
try {
propValue = m_gson.fromJson(prop.getValue(), propClass);
validateObject(propValue, context + "." + property);
} catch (ContextualJsonSyntaxException e) {
throw new BeanValidationException(
new SimpleConstraintViolation(e.getContext(), e.getMessage()), context);
} catch (NumberFormatException e) {
throw new BeanValidationException(
new SimpleConstraintViolation(property, e.getMessage()), context);
}
Method method = pd.getWriteMethod();
if (method == null) {
String msg =
"Property '"
+ property
+ "' was specified for object '"
+ name
+ "' but no matching setter was found on '"
+ object.getClass().getName()
+ "'";
throw new QueryException(msg);
}
try {
method.invoke(object, propValue);
} catch (Exception e) {
logger.error("Invocation error: ", e);
String msg =
"Call to "
+ object.getClass().getName()
+ ":"
+ method.getName()
+ " failed with message: "
+ e.getMessage();
throw new QueryException(msg);
}
}
}